ABB IRB 390 Product Manual page 294

5 Repair
5.6.5 Replacing the axis-5 gear unit pre-stage
Continued
3
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294
Action
Lubricate the screw thread and the washer surface
underneath the screw head.
Secure with the lubricated screws and washers
and tighten, using the torque wrench head with a
closed end.
Tip
The shaft rotates when loosening/fastening the
screws.
Use one of two alternatives to hold the shaft still:
1 Hold the motor shaft still with an open-end
wrench (47 mm) at the joint while loosen-
ing/tightening the screws. Requires two
persons.
xx2000000346
2 Hold the motor shaft still by inserting a pin
through the joints (5-axis robot) or through
the joint and against the casting. Choose
an appropriate material for the pin, that
does not damage the surface of the joints.
xx2000000688
CAUTION
There is a risk of damage to the joint if not
handled with care.
© Copyright 2020 - 2021 ABB. All rights reserved.
Note
Anti-seize paste: 3HAC070875-002
(Molykote P1900)
Torque wrench head, closed end:
3HAC063379-001.
Hexagon flange bolt: 3HAC058625-
001
Washer: 3HAC058626-004
Tightening torque: 35 Nm.
xx1900001823
Product manual - IRB 390
3HAC066566-001 Revision: B